OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c0 ~( X3 t3 c9 u/ _2 p( ~
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.0 l' j$ u" v1 B% Q; \5 j- o
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) O6 W" y1 }. H% g$ [1 g
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ ` S" {% H* S' {1 e' \9 Q8 C: S
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or! T o- F3 d6 Y" C% ~1 J
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any# R k w2 @3 t' K
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.4 q+ O: f1 E( D3 P$ D
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- S% v# i/ _3 A4 A- z* M9 C5 V
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>7 q2 e6 ?+ }" O5 u+ b9 G
#include <linux/sysctl.h>) ]; U) W) t6 C
#include <linux/mm.h>9 d$ f# O0 ] f. R" Q; `8 X
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>) ]+ T, @$ m6 v
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG( g. M" i$ G9 R L' t% K' _' z
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* p: C+ r4 h T. W- j
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# a7 z1 ?. f+ _8 d I9 j+ G
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else* S" \1 Z& O; }$ e; r# `
#define DMA_PRINTK( x... )! j2 J, C1 D/ @
#define DMA_FN_IN. R$ x9 E2 d1 c7 R9 d
#define DMA_FN_OUT2 B, A4 F3 M2 }) j0 j4 i
#endif5 s- y" R% G# Y7 j! R" U5 n
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3; h+ @( C1 W+ p( `. d( Y
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22' H: S9 H; \8 B6 F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;+ l7 B( D5 G9 [& y
static volatile int irqraised2 = 0;% f* e0 G0 _; n' L- O6 V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 r' A; G: }# N8 F, S- v% u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 g' V S9 X& D
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* J' Y8 o2 c, ]
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dma_addr_t dmaphyssrc1 = 0;( ~: K) s" X& K: H$ Y
dma_addr_t dmaphyssrc2 = 0;6 R8 G0 A; T4 s' ]) i0 z: g j0 Y
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;8 r- _7 g: }3 {% f- S
char *dmabufdest1 = NULL;2 l, [" A7 s" P9 q: b" C
char *dmabufdest2 = NULL;/ y% Y' L9 s' e5 M' v
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static int acnt = 512;
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static int bcnt = 8;$ s7 L, n! r; E$ \
static int ccnt = 8;1 f+ ~3 u4 M6 A# E1 K
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module_param(acnt, int, S_IRUGO);3 X' J! J: B+ r' W- g; G
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动